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List of subdomains that could be candidates for reservation in multitenant app/ subdomain validator for multitenant apps

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Subdomains

List of subdomains that could be candidates for reservation in multitenant app/ subdomain validator for multitenant apps

YAML list

This is a simple list of subdomains in YAML (I picked YAML over JSON because you can easily add comments).

Subdomains are added as a simple list (ex. www, smtp, etc.). Regular expressions are supported but MUST be quoted and delimited by slashes (ex. "/www[0-9]+/").

Validators

PHP implementation

Subdomain validator for multitenant apps written in PHP. Simply checks if a subdomain is in the list.

Installation

composer require radwebhosting/reserved-subdomains

Usage

Bool \radwebhosting\Multitenancy\Validators\Subdomain::isReserved($subdomain[, $yaml_file]);

Example:

$subdomain = 'www2';
if (\radwebhosting\Multitenancy\Validators\Subdomain::isReserved($subdomain)) {
    throw new Exception('Sorry, subdomain is reserved');
}

Contributing

Pull requests are welcome.

It would be nice to implement a validator in different languages (Node, Ruby? PHP is in /php)

The following *nix commands might be useful while editing the list:

cat reserved-subdomains.yaml | sort # sort entries

awk '{if (++dup[$0] == 1) print $0;}' reserved-subdomains.yaml # remove duplicates

awk '{if (++dup[$0] == 1) print $0;}' reserved-subdomains.yaml | sort # remove duplicates + sort

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